Syringaldehyde is a polyphenolic compound belonging to the group of flavonoids and is found in different plant species like Manihot esculenta and Magnolia officinalis^[1]. Syringaldehyde moderately inhibits COX-2 activity with an IC₅₀ of 3.5 μg/mL^[2]. Anti-hyperglycemic and anti-inflammatory activities^[1].

Syringaldehyde inhibits COX-2 activity in a dosedependent manner with an IC₅₀ of 3.5 μg/mL^[2].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Syringaldehyde exerts anti-hyperglycemic effect in rat model of diabetes induced by streptozotocin. Apart from antioxidant capability, Syringaldehyde also has anti-inflammatory activity as it is found to have inhibitory action on cyclo-oxygenase 2 (COX-2) in mouse macrophage cell line^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

182.17

C₉H₁₀O₄

134-96-3

丁香醛

Room temperature in continental US; may vary elsewhere.

4°C, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)

DMSO : 100 mg/mL (548.94 mM; Need ultrasonic)

H₂O : < 0.1 mg/mL (insoluble)

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month (stored under nitrogen)。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 2.5 mg/mL (13.72 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (13.72 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.5 mg/mL (13.72 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (13.72 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (13.72 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (13.72 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Shahzad S, et al. Protective effect of syringaldehyde on biomolecular oxidation, inflammation and histopathological alterations in isoproterenol induced cardiotoxicity in rats. Biomed Pharmacother. 2018 Dec;108:625-633.

  [2]. Stanikunaite R, et al. Cyclooxygenase-2 inhibitory and antioxidant compounds from the truffle Elaphomyces granulatus. Phytother Res. 2009 Apr;23(4):575-8.

Rats^[1]
Adult male albino wistar rats (weighing 180-220 g)
12.5 mg/kg, 25 mg/kg, and 50 mg/kg; p.o.; for 21 days
Adult male albino wistar rats are randomly divided into six groups (n=6), first group serves as control and receives vehicle (orally) for 21 days. Second group is given Syringaldehyde in saline orally at 50 mg/kg for 21 days. Third group receives vehicle for a period of 21 days and then ISO (100 mg/kg, s.c.) on 20th and 21 st day at an interval of 24 h. Fourth group is given Syringaldehyde for 21 days at 12.5 mg/kg, p.o. and ISO on 20th and 21 st day. Fifth group receives Syringaldehyde at concentration of 25 mg/kg, p.o. for 21 days and ISO on 20th and 21 st day. The sixth group is treated with 50 mg/kg of Syringaldehyde for 21 days and ISO on 20th and 21 st day. During the experimental procedure body weight of animals are monitored and on 22nd day, 24 h after second injection of ISO, rats sre sacrificed by cervical decapitation.
Note: Body weight of animals belonging to different groups did not differed significantly but heart weight of ISO challenged animals were highly elevated (p ≤ 0.05) than control rats. However, treatment of rats with Syringaldehyde significantly reduced heart weight in dose dependent way. The rats treated with Syringaldehyde alone displayed an insignificant difference from control group.

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Shahzad S, et al. Protective effect of syringaldehyde on biomolecular oxidation, inflammation and histopathological alterations in isoproterenol induced cardiotoxicity in rats. Biomed Pharmacother. 2018 Dec;108:625-633.

  [2]. Stanikunaite R, et al. Cyclooxygenase-2 inhibitory and antioxidant compounds from the truffle Elaphomyces granulatus. Phytother Res. 2009 Apr;23(4):575-8.